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Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves but longer than infrared waves. Its wavelength ranges from about one meter to one millimeter, corresponding to frequencies between 300 MHz and 300 GHz, broadly construed. A more common definition in radio-frequency engineering is the range between 1 and 100 GHz, or between 1 and 3000 GHz . The prefix micro- in microwave is not meant to suggest a wavelength in the micrometer range; rather, it indicates that microwaves are small, compared to the radio waves used in prior radio technology.
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In a hierarchical telecommunications network, the backhaul portion of the network comprises the intermediate links between the core network, or backbone network, and the small subnetworks at the edge of the network.
Microwave transmission is the transmission of information by electromagnetic waves with wavelengths in the microwave frequency range of 300 MHz to 300 GHz of the electromagnetic spectrum. Microwave signals are normally limited to the line of sight, so long-distance transmission using these signals requires a series of repeaters forming a microwave relay network. It is possible to use microwave signals in over-the-horizon communications using tropospheric scatter, but such systems are expensive and generally used only in specialist roles.
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Ceragon NetworksLtd. is a networking equipment vendor, focused on wireless point-to-point connectivity, mostly used for wireless backhaul by mobile operators and wireless service providers as well as private businesses.
Proxim Wireless Corporation is a San Jose, California-based company that builds scalable broadband wireless networking systems for communities, enterprises, governments, and service providers. It offers wireless LAN, point-to-multipoint and point-to-point products through a channel network. The company is a product of many mergers and acquisitions over the years.
Airspan Networks is an American telecommunications company, headquartered in Boca Raton, Florida. The company develops Radio Access Network technology including the Sprint 'Magic Box' and cells for the Rakuten virtualized network.
Overture Networks was a company that designed, manufactured, and marketed networking and telecommunications equipment. It was "a leading developer of converged packet access platforms for Carrier Ethernet services." Overture was headquartered in Research Triangle Park (RTP), North Carolina and also maintained offices in Westford, MA and Bangalore, India.
PathWave Design is a division of Keysight Technologies that was formerly called EEsof. It is a provider of electronic design automation (EDA) software that helps engineers design products such as cellular phones, wireless networks, radar, satellite communications systems, and high-speed digital wireline infrastructure. Applications include electronic system level (ESL), high-speed digital, RF-Mixed signal, device modeling, RF and Microwave design for commercial wireless, aerospace, and defense markets.
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SAF Tehnika is a Latvian designer, producer and distributor of digital Microwave Data transmission equipment. SAF Tehnika products provide wireless backhaul for digital voice and data transmission to mobile and fixed network operators, data service providers, governments, and private companies. The company sells microwave point-to-point radios for licensed and license-free frequency bands, as well as unique spectrum analyzer Spectrum Compact. SAF Tehnika also provides customized microwave solutions for various applications, such as Broadcasting and Low latency networks.
Midea Group is a Chinese electrical appliance manufacturer, headquartered in Beijiao town, Shunde District, Foshan, Guangdong and listed on Shenzhen Stock Exchange. As of 2021, the firm employed approximately 150,000 people in China and overseas with 200 subsidiaries and over 60 overseas branches. Midea Group is listed on Shenzhen Stock Exchange since 2013. It has been listed on the Fortune Global 500 since July 2016. Midea produces lighting, water appliances, floor care, small kitchen appliances, laundry, large cooking appliances, and refrigeration appliances. It is the largest microwave oven manufacturer, and acts an OEM for many brands. It also has a long history in producing home and commercial products in heating, ventilation and air conditioning (HVAC). It is the world's largest producer of industrial robots and appliances.
Redline is a multinational wireless communications network designer and manufacturer headquartered in Markham, Ontario, Canada. It also maintains offices and operations in Florida, California, Romania and Oman.
Siae Microelettronica is an Italian multinational corporation and a global supplier of telecom network equipment. It provides wireless backhaul and fronthaul products that consist of microwave and millimeter wave radio systems, along with fiber optics transmission systems provided by its subsidiary SM Optics.
Cboe Global Markets, Inc. is an American company that owns the Chicago Board Options Exchange and the stock exchange operator BATS Global Markets.
CalAmp Corporation is an Irvine, California-based provider of Internet of things (IoT) software applications, cloud services, data intelligence and telematics products and services. The company's technology includes edge computing devices and SaaS-based applications for remotely tracking and managing vehicles, drivers, cargo and other mobile assets. The company also owns the patents and trademarks for the LoJack Stolen Vehicle Recovery System and provides connected car and lot management products.
Filtronic is a UK public limited company (PLC) that is AIM-listed on the London Stock Exchange (FTC.L). It is a designer and manufacturer of RF, microwave, and millimeter-wave (mmWave) components and subsystems for applications in telecommunications, defence, space and transport. It is headquartered at NETPark in County Durham with other facilities in Leeds and Manchester and a US manufacturing site in Salisbury, MD.
References
- ↑ "Dragonwave Inc (DWI:Toronto)". Bloomberg Businessweek. Archived from the original on May 18, 2010. Retrieved 2013-08-12.
- ↑ "DragonWave's Inexpensive Horizon Compact Wireless Carrier Ethernet System". TMCnet. Retrieved 2013-09-13.
- ↑ "DragonWave to list on AIM market, Toronto Stock Exchange". Telecompaper. Retrieved 2013-01-21.
- ↑ "DragonWave Debuts in U.S. Listing". 24/7 Wall St. Oct 15, 2009. Retrieved 2013-09-19.
- ↑ "Dragonwave strikes early in small cell backhaul". Rethink Wireless. Archived from the original on 2014-02-01. Retrieved 2013-09-19.
- ↑ "DragonWave introduces new Horizon Compact+". Electrical Business. Archived from the original on 2014-02-01. Retrieved 2013-09-19.
- ↑ "Transform-X to Acquire DragonWave and Bring Transformative 5G Backhaul Solutions to Market". everything RF. Retrieved 2017-10-26.